Combination burner



July 19, 1938. J. 5. ZlNK COMBINATION BURNER 2 Sheets-Sheet 1 Filed Oct. 28, 1936 N Q JOHN Z/IVKINVENTOR.

' ATTORNEYS.

July 19, 1938. z 2,124,175

COMBINATION BURNER Filed Oct. 28, 1936 2 Sheets-Sheet 2 INVENTOR.

- JOH/Vfi Z/NK 2270 NEYS.

Patented July 19, 1938 UNITED, STATES PATENT OFFICE COMBINATION BURNER John S. Zl k, Tulsa, Okla.

Application October 28, 1936, Serlal No. 108,101 7 Claims. (01. 158- 11) This invention relates to improvements in burners and more particularly to combination oil and gas burners used in industrial heatin furnaces such as are employed in connection with stills, boilers and the like.

A principal object of this invention is to provide a highly eflicient combination which permits either the oil or the gas burning portion to be removed from service without disturbing the 0peration of the other fuel burning portion and without requiring dismantling of the main burner housing or supporting structure and without necessitating alteration or dismantling of auxiliary appliances, such as registers for admission and control of air for combustion.

Another object of this invention is to provide a burner having theabove advantages which, at the same time, will be cheaper to construct and simpler to operate than those heretofore known.

Other objects and advantages of my new burner will become apparent from the following description when read in conjunction with the accompanying drawings, which illustrate one of the preferred forms of .my burner.

Fig. 1 is a sectional elevation showing the entire burner assembly.

Fig. 2 is an isometric view of the burner assembly, and

Fig. 3 is a detail showing the position of the gas burner as it is withdrawn through the opening provided in the burner supporting plate.

Referring to the drawings, the burner assembly is shown mounted in burner openingll in a furnace wall 5. (Fig. 1.) The burner assembly and mounting consist of a flanged ring 6 surrounding the opening 4 and fastened to wall 5 by bolts or other suitable means. A burner supporting plate I is supported by ring 6 and spaced therefrom by spacers 8. A hollow tubular member 9 extends through a hub or bearing l0 mounted exteriorly of plate 1 and located substantially in the center thereof. Member 9 extends through plate I, the space between plate I and. ring 6 and for some distance horizontally into opening 4. It is slidable in hub 10 and may be adjusted horizontally to any extent desired. Hub l9 serves to carry member 9 and center it in the burner assembly and opening 4. An oil burner ll comprising an internal steam supply pipe l2 and an external oil supply pipe l3, connected together at the burner head I4, is inserted through plate 1 and through the member 9 until burner head l4 projects beyond the inner end of member 9. Steampipe l2 and oil pipe l3 are also joined together outside plate I by means of a bushing a to cause steam to travel toward head l4. This is a common type of oil burner in which steam is admitted through pipe I2 and serves to atomize the oil admitted through pipe l3, and to discharge the resulting steam-oil mix- 5 ture into the furnace through openings IS in the head l4.' A small circular opening I6 is provided in plate 1 in close proximity to hub l0. A gas supply pipe 3, one end of which is connected to one side of a ring shaped gas burner I1; is in- 10 serted through opening l6 into the burner housing. Burner I1 is made in the form of a hollow ring having that part of its surface whichfacestoward thefumace opening 4, pierced with a series of small holes I 9 forthe discharge of fuel gas 15 from the burner ll into the furnace. An axial opening 20 is provided in burner ll of such size as to permit burner I! to encompass member 9 and' to be freely slidable thereon.

In assembling the complete burner, gas burner 20 ILmounted on the end of pipe I8, is inserted through opening l6 in plate I in the position shown in dotted outline at the left of Figs. 1 and 3, and is then pushed forward until it extends beyond oil burner head l4 whereuponburner I1 25 is turned until opening 20 registers with the inner end of member 9. Pipe I 8 is then drawn backward until it encircles the pipe 9 and oil burner head extends beyond gas burner l'l. Pipe I8 is now above and lies parallel to member 30 9 and is supported at the burner end by member 9 and at the other end by the collar 9a which surrounds said member. Pipes l2, l3 and I8 are then connected to their respective sources of supply by means of unions 2|, 22 and 23, respectively. 35 Parti-circular doors 24 and 25 are pivotally mounted on the outside of plate I on a bolt 26, to cover the opening I6 through which gas burner l1 and pipe I8 extend. Notches 21 and 28 in the lower ends of doors ,24 and 25 respectively 40 permit them to close with a relatively tight fit about pipe l8 and thus completely close the opening l6.

In the form of burner illustrated in the drawings, a louvre type air register 29 is used to regu- 45 late the volume and direction of the air admitted to the burner opening 4 for regulating the combustion of the fuel used. As illustrated in the drawings, register 29 consists of a solid plate 30 which is slidably mounted on member 9 by means of a centrally located sleeve or hub 3|. A series of louvres 32 mounted on the furnace side of plate 30 extendahorizontally toward opening 4 and are so placed that air passing into the furnace therethrough, while travelling in a generally -55 horizontal direction, will be given a swirling action as determined by the angle at which the louvres 32 are set against plate 30. This swirling motion of the incoming air combined with the direction of travel of the oil or gas provide effective mixing of the air with the fuel to give most efllcient combustion. The direction of travel of the gas or oil is determined by the angle at which the openings or jets I5 and I9 of the oil and gas burners I4 and I1 respectively are set and may be varied by changing burner heads I4 and I1 to meet the desired conditions.

The plate 30 is provided with an opening above the hub 3| to permit insertion and removal of the gas burner I 1, and this opening is normally closed by a removable door 40.

In order to regulate the volume of air supplied to the burners through register 29, the register is slidable forward and back on member 9 by means of rods 33, (only one of which is shown.) fastened to plate 30 and extending through suitable openings in plate I and terminating in .handles 34. By means of the handles and rods, the register 29 may be moved inwardly until the plate 30. entirely closes opening 4 or outwardly until opening 4 is fully open to the surrounding air, or register '28 may be positioned at any point between these extremes to regulate the volume of air entering the furnace through opening 4.

I When the described louvre type register is used in my new burner sufllcient unobstructed space is provided between the inner edges of louvres 32 and hub 3| to permit burner I! to pass when being inserted into or removed from the burner housing. 7 i

vThe particular advantages of the new burner appear under the following circumstances: If the gas burner I1 is in use to supply the necessary combustion gases to the furnace and for some reason the burner becomes inoperative, as when jets I9 become clogged, the oil burner I4 may be lighted and put into service and it is only necessary to shut off the supply of gas to pipe I8 and burner I1, break union 23, move pipe I8 and burner I1 toward the furnace until burner I7 clears the tip of burner head I4, then turn pipe I 8 until burner I'I assumes an upright position, and then withdraw pipe I8 and burner I! from the housing through opening I6 in plate 1. After repairing burner I], it may be reinserted into the housing and the burner assembly in the manner previously described, and when pipe I8 is reconnected to the source of gas supply by the use of union 23, this burner is ready to go back into service. It will be noted that all of these operations may be conducted without disturbing oil burner I4 and its connecting pipes I2 and I3 and without disturbing the air register 29 although it may be necessary to change its position to provide a different quantity of air for the other fuel, in producing eflicient combustionof that fuel. Similarly, if the oil burner I4 becomes inoperative it is only necessary to disconnect unions 2I and 22 and withdraw this portion of the combination burner from the housing by withdrawing pipes I2 and I3 and head I4 from the interior of member 3, this time without disturbance of gas burner I! or the air register 29. In this case, of course, gas burner I'I will remain in service in the furnace while the oil burner is being repaired.

It will be understood that the new burner will be advantageous where no air register is used and where ring 6 and plate 1 are formed as a unit bringing plate 1 against the wall 5 of the furnace, but, of course, some other means of providing air for combustion must be supplied. Also the space between plate I and ring 6 may be entirely enclosed with a hood and air for combustion may be introduced by forced draft, and in this case register 29 may or may not be required.

The sizes of burners I4 and I! may vary in accordance with the capacity required by the service for which the burners are to be used. In every case the interior diameter of member 3 and the diameter of opening I6 will be adequate to permit assembly or taking apart of the respective burners in the manner described. However, the bumer I1 is always sufilciently small so that opening I6 will be relatively small in diameter as compared with the diameter of plate I.

Burners I4 and I! are generally made of heat resisting metal and are readily removable from the ends of their respective pipes for cleaning or for replacement.

As burner and its connecting pipes I2 and I3 are slidably mounted in member 9, and burner I1 and pipe I3 are likewise slidably mounted in opening I6 and on member 8, both burners are adjustable horizontally to any desired extent with respect to the furnace opening and to the front edges of louvres 32 and are also adjustable relative to each other.

By designing gas burner I! in the form of a ring encompassing oil burner I4 and with circular rows of gas jets I 9 in the surface of the ring, the fuel gas is discharged uniformly and produces a uniform mixture with the entering combustion air thus providing highly eflicient combustion of the gas. Similarly, by locating oil burner I4 in the center of the combination assembly and by suitable arrangement of jets I5, a similar even distribution of oil fuel in the combustion air is produced and efllcient. combustion results.

Although I have described a specific embodiment of my invention, as applied to combination burners, it will be obvious to those skilled in the art that various modifications may be made in the details of construction and in the arrangement of the several cooperating parts without departing from the principles herein set forth.

What I claim and desire to secure by Letters Patent is:

1. An oil and gas burning apparatus including a supporting plate, said plate having two adjacent ports, one of said ports being substantially in the a center of said plate, an oil burner mounted in said centrally located port, a gas burner mounted in the other port, said gas burner including a ring shaped burner head encompassing said oil burner, and each of said burners being independently removable from the combination without disturbance of the remaining burner.

2. An oil and gas burning apparatus comprising a plate having a bearing, a conduit slidably mounted in said bearing, an oil conducting pipe extending through the conduit, an oil burner nozzle arranged at one end of said pipe, the plate being provided with an opening adjacent to the bearing; a gas conveying pipe extending through the opening in the plate and parallel to said con duit, an annular gas burner surrounding said conduit and connected near its peripheral portion to the discharge end of the gas conveying pipe, the opening in the plate being of sumcient size to permit'the gas burner and the gas conveying pipe to pass therethrough, and a door on the plate closing said opening when the gas pipe extends therethrough.

3. An oil and gas burning apparatus comprising a vertically disposed plate having a bearing,

a horizontal conduit extending through the plate and slidably mounted in said bearing, oil and steam conducting pipes extending through the conduit, an oil burner arranged at one end of said pipes and operatively connected to the same, said platebeing provided with an opening adjacent to said bearing, a gas conveying pipe extending through the opening in the plate, an

annular gas burner surrounding said: conduit and connected to one end of the gas conveying pipe, the opening in the plate being of suflicient size to permit the gas burner and gas conveying pipe to pass therethrough, the oil burner and the gas burner being removable from the conduit and plate independently of one another, and means for closing the opening in the plate while the gas conveying pipe extends therethrough.

4. An oil and gas burning apparatus comprising a plate having a bearing, a substantially horizontally disposed conduit extending through the plate and mounted in said bearing, an oil conducting pipe and a steam conducting pipe extending through said conduit, an oil burner operatively connected to end portions of said pipes, said plate being provided with an opening adjacent to said bearing, a gas conveying pipe extending through said opening and terminating adjacent to said oil burner, and an annular gas burner surrounding said conduit and having a peripheral portion, one end of-the gas conveying pipe being connected to the gas burner near the peripheral pipe and oil burner being also insertable into or:

removable from the conduit while the gas burner remains in normal position.

tubular member and projecting beyond the latter into said opening, said plate being provided with a port adjacent'said tubular member, a gas supply pipe extending through said port toward said opening, and a substantially ring-shaped gas burner attached to the inner end of said pipe, said gas burner having an axial opening of a size to permit said gas" burner to he slipped over said oil burner and said tubular member.

6. A combination oil and gas burner comprising supporting means, an oil conveying conduit supported by said means, an oil burner nozzle connected to the discharge end of said oil conveying conduit, a gas burner nozzle through which the oil conveying conduit extends, said nozzles being arranged in close proximity to one another with the oil burner nozzle normally projecting beyond the gas burner nozzle, gas conveying conduit means connected to said gas burner nozzle for furnishing gaseous fuel to the latter, said gas burner nozzle and the gas conveying conduit means being supported by the supporting means and being removable from the latter while the oil burner is in operation without disturbing the latter, and said oil burner nozzle and oil conduit being removable from said supporting means while the gas burner is in operation without disturbing the latter.

7. A combination oil and gas burner comprising supporting means, an oil conveying conduit supported by said means, an oil burner nozzle connected to the discharge end of said 011 conveying conduit, a gas burner nozzle through which the oil conveying conduit extends, said nozzles being arranged in close proximity to one another with the oil burner nozzle normally projecting beyond the gas burner nozzle, gas conveying conduit means connected to said gas burner nozzle for furnishing gaseous fuel to the latter, said gas burner nozzle and the gas conveying conduit means being supported by the supporting means and being removable from the latter while the oil burner is in operation without disturbing the latter, and said oil conveying conduit and oil burner nozzle being detachably connected to the supporting means and being removable from the latter while the gas burner is in operation without 

